Mortising machine



E. DALLLIG MORTIS ING MACHINE Filed Dec.

3 Sheets-Sheet 1 INVENTOR EdW fi a; ATTORNEY Ev DALLIG MORTISING MACHINEFiled Dec. 14. 1923 3 Sheets-Sheet 5 INVENTOR Patented Aug. 19, 1924:.

e E It T PATENT orr cn EDWARD DALLIG', or roUGHKEnPsIn, new YORK.

IVIORTISING CHINE.

Application filed December-14, 1923. SrialNo. 680,653.

This invention relates to improvements in mortising machines, or thatclass of apparatus used in cutting recesses in solid substances, andmore particularly to a type of machine for making openings otuniforimsize and shape but available to suit. f

The main object of the invention. is to provide a mechanism capable ofautomatically forming one or more spoke receiving recesses in the innerside of a. wheel rim of solid, built up or lamina-ted construction, suchfor instance as are used for steering wheels of self propelled vehicles.I

Another purpose is to produce, a device by which a plurality of powerdrivenrouting cutters arecaused to remove thematerial in an easy andrapid manner, all of the cutters being universally actuated and con.-trolled from a single points j A further aim is in the provision of amortising machine for wheel rims capable of operating on rims of varyingdiameter, being readily adjusted as. required.

These and other miscellaneous aims, ob jects and purposes, which willlater appear, are accomplished by the novel construction, combinationand arrangement of parts hereinafter described and shown in theaccompanying drawings, forming a material part of this disclosure, andin which 1.

Figure 1 is a plan View of an embodiment of the invention, the, coverportion being partially broken away to disclose the interior. a

Figure 2 is a partial plan and horizontal sectional view of the same.

Figure 3 is a. transverse sectional view taken on line 33 of Figure 2.

Figure 4. is a side view of a conventional type of hand Wheel,v drawn.to a smaller scale.

F igure 5 is an enlarged plan view of one of the cutter carryingcompound slides.

Figure 6 is an enlarged fragmentary sectional view showing the shape ofcut produced in the wheel rim.

Figure 7 is a plan view similar to Figure 5 but showing a modificationin construction s Figure Sis a sectional view of the'rim. as .mortisedby the device shownin Figure 7.

Figure 9 is a sectional. View of the cutter, the sectionj'being takenon'line' 99 of Figure 5. q I i I Referring 'to'the drawings more. indetail, Figured shows aconventional type of steering. heel composed of atwo part rim 15, joined at ,of solid, sectional, laminated or otherconstruction, usually made of. wood and having spokes 16- radiatingfrom; a hub 1?, the outer ends. of the spokesibeing 1ncreasedin width,as at-l8 andtight-fitted to correspondinglyshaped recesses 19 intheinterior surface of. the wheel rim;

As before stated, the main object of the invention isto provide amechanism for cutting, routing or removing stock from the rim into whichthe ends of the spokes or arms are engaged,

Said. mechanism comprisesa power driven shaft 20 disposed inaverticalplane, its. upperend' being guided in bearings 21 and 22 formedon plates 23 and 24, the former being the lowermost. I I

Said plates aresegmental in shape, sym metrical in outline and providedwith outstanding, lugshaving between them shouldered studs, 25'maintaining the plates in rigid spaced engagement, and also a thirdorcover plate 26, secured onthe studs. I j a Fixed on theshaft 20 is avbevel gear 28 with which meshes pinions 29 secured on spindles 3Orotatably mounted on blocks 31 fixed on the plates 23, the inner end ofthe spindles also being engaged blocks 82 fixed on the plate24, thesespindles being by the nuts 27 positionedapproximately forty-five degreesI I p t i Carried on the outerends of the'spinclles are universal joints33 connected by, telescopic elements, 34c. with similar universal joints35 fixedon the ends of spindles 36 mounted in sleeves 37 and carryingchucks and convenient holding means 38' for the routing cutters 39. a

Said sleeves 37 are rotatably mounted in slides 40 movable in a planeparallel'to the spindles 36, said slides being engaged in other slides41, operable on uides 42 fixed on the plate 23 at right anglbs to thespindles 36.

The bearings in the slides 40 are provided with caps 40, the centers ofwhich are provided with holes into which project pins 43 of theeccentric discs '44 disposed in contact with the lower surface of aplate 70 secured in the plate 24.

Said discs have axial spindles 45 which extend thru the plate 26 andmounted on the spindles are spur gears 46 above which are collars 47.

Meshing with the spur gears 46 is another gear 48, relatively of largediameter, mounted on a spindle 49 rotatable in the plates 24 and 26arranged radially of the shaft and midway of the blocks 31.

The spindle is caused to return to its original normal rotative positionby a torsion spring 52, the same opposing an opera:

' tive handle 53 by which the spindle and gear can be rotated.

It will be understood that when the handle 53 is rotated, the gears 46are turned and therefore the discs 44, in which the pins 43 are engaged,causing the slides to move and the cutters 39 to advance in a curvedpath as they are rotated, thus forming a pocket or recess 19 as shown.

Said slides are provided with tension springs, respectively 54 and 55which operate to return the slides'to normal position.

In Figure 5 a modification is shown by which the recess 19 may beformed, the

same differing mainly in having parallel slides and a curved bottom, inplace of a semi-circular cut. 7

To accomplish this a cam is fixed on the spindle 45, the cam having anarcuate rear portion 61 normally in contact with a pin 62 fixed in theslide 40 and in its front portion is a slot 63 slidably containing ablock 64 in which the stem 43 is received.

The opposite end 65 of the cam is adapted to make contact with a fixedarcuate plate 66 secured to the slide 40 in such manner that when thepoint 65 engages the plate, the upper slide is compelled to move in astraight. path, producing the sides of the recess, the bottom of whichwill conform to the inner edge surface of the plate 66.

Figure 8 shows a recess 19 having parallel side Walls and a straightfiat bottom, the same being produced'by the device shown in Figure 7;

Secured to the upper side of the plate 24 is a plate 70 having alongitudinal slot 7] with a right angular extension 72, the ends beingsquare and the sides parallel.

Movable in these guide slots is a block 7 8 in which the stud43 isreceived, said stud also passing through a guide 74 operablein a slot 75 formed in a lever arm 76 rigidly attached to the spindle 45.

Thus it will be seen that the cutter 39 is caused to advance straightinto the rim and move laterally by reason of the slots 72 until theopposite end of the recess has been reached, whereupon it may movereversely until it has resumed its initial position.

From the foregoing it will be seen that a routing device by which a pairof cutters is driven and controlled has been disclosed in the preferedform of its embodiment, but it will be understood that, changes may bemade without conflicting with the scope and tenor of the claims heretoappended.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

l. A mortising machine comprising a power. shaft, spindles geared tosaidshaft and arranged radially thereto at an angle forming an equaldivision of a circle endthrust tool carrying spindles connected byuniversal joints to be driven from said first mentioned spindles;crossed slides upon which the tool carrying spindles are mounted to begiven predetermined endwise and lateral movements, a crank for each setof compound slides imparting thereby to each tool the desired movementand a common means for rotating the said cranks.

2. A mortising machine comprising a pair of spindles each carrying anend-thrust cutter, spindles driven from a common shaft having auniversally jointed connection for rotating said tool carryingspindles,a pair of crossed slides upon which each of said tool carrying spindlesare mounted to be moved endwise and laterally, a crank for each set ofcrossed slides and a single wheel geared to botlr cranks. 1, r Y

3. A mortising machine comprising a pair of spindles each carrying anendthrust cutter, spindles driven froma common shaft having auniversally jointed connection for rotating said tool carrying spindles,a pair of crossed slides upon which each of said tool carrying" spindlesare mounted tobe moved endwise and laterally, a crank for each set ofcrossed slides, a single Wheel geared toboth cranks, manual means foroperating the geared Wheel, and automatic means for returning the gearand slides to normal position.

In witness whereof I have affixed my signature.

EDWARD DALLIGJ

